Micro Hydraulic & Pneumatic Valves
MH manufactures aerospace-grade micro hydraulic and pneumatic valves for compact fluid control systems requiring stable sealing, precise opening pressure, small-flow control and long-term reliability.
Unlike large commodity industrial valves, MH focuses on miniature and compact valve solutions used in aerospace, aviation, fuel systems, pneumatic control circuits, hydraulic systems, test equipment and high-reliability industrial applications.
MH supports OEM production of micro hydraulic valves, miniature pneumatic valves, solenoid valves, check valves, pressure relief valves, shut-off valves, regulating valves and custom fluid control assemblies based on customer drawings and technical requirements.
Why Engineers Choose MH
Micro valves are not simply “small machined parts.” Their performance depends on precise control of valve seat geometry, miniature flow passages, sealing surfaces, spring force, opening pressure and contamination-sensitive assembly.
MH combines:
- Aerospace manufacturing background
- Micro valve component machining
- Precision CNC and multi-axis machining
- Miniature valve seat and sealing surface machining
- Small bore and micro flow passage control
- Precision assembly capability
- Aerospace-style process control
- OEM build-to-print manufacturing support
Micro Valve Manufacturing Capability
MH manufactures compact and miniature valves for fluid systems where space, weight, leakage control and reliability are critical.
Micro Hydraulic Valves
- Micro shut-off valves
- Miniature check valves
- Micro relief valves
- Small-flow throttle valves
- Compact pressure regulating valves
- High-pressure miniature hydraulic valves
Micro Pneumatic Valves
- Miniature pneumatic shut-off valves
- Micro gas control valves
- Pneumatic check valves
- Air and nitrogen control valves
- Compact pneumatic valve assemblies
Micro Solenoid Valves
- Normally closed solenoid valves
- Normally open solenoid valves
- Two-way and three-way micro solenoid valves
- Fuel shut-off solenoid valves
- Pneumatic micro solenoid valves
- Compact electromagnetic valve assemblies
Typical Applications
Aerospace & Aviation
Aircraft hydraulic systems, pneumatic systems, fuel systems, lubrication systems and compact fluid control modules.
Compact Pneumatic Systems
Air, nitrogen and gas control circuits requiring small size and reliable sealing.
Fuel & Oil Systems
Miniature fuel shut-off valves, oil control valves, vent valves and check valves.
Test & Laboratory Systems
Small-flow test benches, pressure control systems, gas handling systems and cryogenic fluid systems.
High-Reliability Industrial Equipment
Precision equipment requiring compact valve size, stable flow control and repeatable performance.
Typical Micro Valve Structures
MH supports machining and assembly of miniature valve structures used in aerospace and compact fluid systems.
- Poppet valves
- Needle valves
- Ball valves
- Spool-type micro valves
- Cartridge valves
- Pilot-operated micro valves
- Micro solenoid valve assemblies
- Precision valve seats, spools and plungers
MH understands the key manufacturing requirements behind miniature valve structures:
- Micro bore machining
- Miniature valve seat geometry
- Small flow passage consistency
- Crack pressure consistency
- Low internal leakage control
- Spool/bore fit control
- Spring force matching
- Thin-wall and small-body machining stability
Engineering Specifications & Typical Capability Range
The following ranges are based on typical miniature valve applications and catalog product examples. Final specifications are confirmed according to valve structure, material, media, sealing design and validation requirements.
|
Item |
Typical Range |
|
Nominal bore / orifice |
0.4 mm – 10 mm typical; selected designs larger |
|
Micro orifice examples |
0.4 mm, 0.5 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 4 mm, 6 mm |
|
Low-pressure pneumatic / vent valves |
0–300 kPa |
|
Fuel / air control micro valves |
0.1–3.5 MPa |
|
Medium-pressure hydraulic valves |
6–21 MPa |
|
High-pressure hydraulic / gas valves |
25–40 MPa |
|
Special high-pressure designs |
Project-based evaluation |
|
Operating temperature |
-55°C to +135°C typical |
|
Cryogenic designs |
Down to -196°C for selected low-temperature valve designs |
|
High-temperature designs |
Up to +200°C or above for selected gas/oil applications |
|
Common voltage options |
18–30V DC, 24V DC, 28V DC |
|
Typical media |
Hydraulic oil, aviation fuel, air, nitrogen, helium, LNG, liquid nitrogen, industrial gases |
Micro Valve Engineering Focus
For miniature valves, small dimensional variation can directly affect leakage, pressure setting, flow resistance and service life.
MH focuses on:
- Miniature valve seat machining
- Micro orifice and flow path consistency
- Low leakage sealing surface control
- Crack pressure repeatability
- Compact valve body precision machining
- Small spring and plunger matching
- High-pressure sealing in limited space
- Lightweight aerospace valve component manufacturing
- Functional stability after pressure cycling
This is especially important for aircraft fuel systems, pneumatic actuation circuits, compact hydraulic modules, gas control systems and test equipment where available space is limited.
Materials & Seal Compatibility
MH supports material selection according to working pressure, medium, temperature and corrosion requirements.
Valve Body & Internal Component Materials
- Stainless steel
- Aluminum alloy
- Titanium alloy
- Brass
- Customer-specified aerospace materials
Seal Material Selection
Seal material FKM/PTFE /PEEK /EPDM /NBR can be matched according to:
- Working medium
- Temperature range
- Pressure level
- Leakage requirement
- Service life requirement
- Fuel, hydraulic oil or gas compatibility
Precision Machining & Cleanliness Control
Micro valves are more sensitive to burrs, particles, surface roughness and assembly contamination than large valves. A small particle can cause leakage, spool sticking or unstable opening pressure.
Precision Capability
- Micro bore machining
- High concentricity machining
- Fine sealing surface finishing
- Precision internal cavity machining
- Small threaded interface machining
- Tight geometric tolerance control
- Compact multi-port valve body machining
Cleanliness Control
MH supports aerospace-style cleanliness and assembly control according to customer requirements. This is especially important for:
- Micro hydraulic valves
- Micro solenoid valves
- Precision pneumatic valves
- Fuel control valves
- High-pressure gas circuits
- Contamination-sensitive aerospace systems
Validation & Testing Capability
MH supports inspection and functional validation for OEM micro valve projects.
Available Testing Capability
- Hydraulic pressure testing
- Pneumatic leakage testing
- Flow resistance testing
- Crack pressure testing
- Opening and closing pressure verification
- Burst pressure testing when required
- Dimensional inspection
- Functional assembly verification
- Special leakage inspection according to project requirements
Inspection reports and manufacturing traceability documentation can be provided according to customer requirements.
Common Engineering Challenges MH Helps Solve
MH has long-term experience manufacturing compact aerospace fluid components where dimensional consistency and functional stability are critical.
- Internal leakage instability
- Inconsistent crack pressure
- Micro valve seat wear
- Spool or plunger sticking
- Burrs inside small flow passages
- Sealing failure after pressure cycling
- Thin-wall deformation during machining
- Leakage after thermal cycling
- Small-body assembly repeatability
- Contamination-sensitive failure
OEM Manufacturing Support
MH mainly supports OEM and custom micro valve manufacturing rather than off-the-shelf commodity valve supply.
OEM Services
- Build-to-print manufacturing
- Prototype machining
- Small-batch production
- Pilot-run support
- Engineering cooperation during DFM stage
- Precision micro valve component machining
- Complete valve assembly
- Functional testing
- Long-term OEM supply programs
MH works with customers during prototype and production stages to ensure manufacturability, stability and consistent quality.
Why MH
- Focus on Micro Valve Manufacturing
MH’s product experience includes compact valve structures, miniature flow passages and small-bore valve designs.
- Aerospace Manufacturing Background
Decades of aerospace manufacturing experience support high-reliability fluid control component production.
- Precision Machining Capability
Advanced CNC and multi-axis machining support complex miniature valve components.
- Engineering-Oriented Manufacturing
MH understands valve functionality, sealing reliability, crack pressure, leakage control and fluid system stability — not only machining dimensions.
- Flexible OEM Support
Prototype quantities, pilot runs, low-volume aerospace production and long-term OEM cooperation are supported.
FAQ
1. Can MH manufacture micro valves based on customer drawings?
Yes. MH supports OEM build-to-print manufacturing according to customer drawings, samples and technical specifications.
2. Does MH mainly supply standard valves or custom valves?
MH mainly supports OEM and custom valve manufacturing. Most products are manufactured according to customer drawings or application-specific requirements.
3. What types of micro valves can MH manufacture?
MH supports miniature hydraulic valves, pneumatic valves, check valves, relief valves, shut-off valves, solenoid valves and custom fluid control assemblies.
4. What pressure range can MH support?
Typical applications cover low-pressure pneumatic systems, medium/high-pressure hydraulic systems and selected high-pressure miniature gas or hydraulic valve designs. Final pressure rating is confirmed by structure, material, sealing design, medium and testing requirements.
5. What media are compatible?
Hydraulic oil, aviation fuel, air, nitrogen, helium, LNG, cryogenic media and customer-specified industrial media.
6. Can MH support prototype quantities?
Yes. Prototype, pilot-run, small-batch and long-term OEM production are supported.
7. Can MH provide testing reports?
Yes. Pressure testing, leakage testing, flow testing and dimensional inspection reports can be provided according to project requirements.
Contact MH
MH welcomes OEM cooperation for micro hydraulic and pneumatic valve manufacturing projects.
Send MH your drawings, specifications or application requirements for engineering evaluation and quotation support.
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